Closure for receptacles



oct, 16,1923. w 1,471,079 F. G. WACKER CLOSURE FOR RECEPTACLES FiledFeb. 25.A 1921 Patented ct. 16, 1923.

' UNITED -sTATEs 1,471,079 PATENT, oFFlcl-z.

FREDERICK G. WACKER, 0F CHICAGO, ILLINOIS. e

cLosURE Fon REcrTAcLEs,

Application filed February 25, 1921. Serialv No. 147,842.

To all whom t may concern:

Be it known that I, FREDERICK G. WACK- En, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Closuresfor Receptacles, of which the following is a specification.

My invention relates to closures for receptacles, and moreparticularlyto a bung formetal barrels. Metal barrels intended forrepeated shipment, and sturdily and expensively constructed, usuallyhave a head orilice for filling and emptying, rimmed with an internallythreaded ring or flange welded to the apertured metal-sheet of t-hebarrel, and closable by a screw threaded cap Ior bung that enters thethreadedl orifice of the rim. Mutilation of the rim-threads may occurfrom many causes and is a source of great loss, since it is usuallyimpractical to repair such injury, and very manyotherwise-useful barrelshave to be scrapped on this account.

An object of my invention is to provide a' rimmed-oriicevand a closureso constructed that the rimmed part connected to the barrel vhead is notthreaded and offers minimum possibility of damage, so that barrel-lossesfrom this cause may be greatly diminshed or avoided. Another object ofmy invention is to provide a simple and eflicient means for uickly andsecurely`closing the barrel ori- `ce, such means being of a characternot liable to injury but easily replaced if damaged or lost. I

In the drawings hcreinI have illustrated structure embodying myinvention, for Ipurposes of disclosure thereof. Fig. l is a sideelevation, with parts in sections, showing a rimmed-orifice and closureor bung; Fig. 2 is a topfplan View of the orifice rim member; Fig. 3 isa section on line 3-3 of Fig. 2; Fig. 4 is a bottom` plan view of Fig.1; Fig. 5 is a detail -of the bridgepiece, and

Fig. 6 is adiagrammatic section showing a modification.

.To the barrel head 10 a ring 11 may be suitably secured, permanently inany fashion, as by welding at 12, the top surface or crown 13 of the-ring projecting above the barrel-head and affording a convenient seatfor the packing washer .15 underlying the tool-receptive seatingv head16 of the unitary screw-bung 17. Preferably, the

packing washer 15 is retained in the groove 18-in the collar portion 19of the closure, im;Y mediately below the head, and the externallythreaded stem-20, of somewhat smaller diameter, is long enough to extendsomewhat below the bottom planeof the ring 11. This stem engages thethreaded orifice 21 of the bridge member 22, this being preferably anannulus having opposed projecting wings orl lugs 23. A kcotter pin- 24,extending through al suitable transverse hole in the stem 20, or anyother form of stop suitable near thelower end of the stem, preventsaccidental removal of the bridge piece andlimits its downwarddisplacement along the screw stem 20. The ring 11 has an internal flange25, preferably extending nearly the full depth ofthe ring,having'bayonet-lock passages to co-act with lugs 23. Thus the flange isinterrupted by verticaal channels or passages 26 through which the lugs23 of the bridge piece may pass, and near the bottom ofthe flangerecesses 27, 27, are made circumferentially of the flanges in a forwarddirection with respect to the closing rotation of the bung.

With the bridge piece screwed to its lowest position on thescrew stem,in contact with the stop 24, the bung may'l readily be inserted in theflanged ring, the bridge piece slipping nearly clear through the flange,with its lugs 23 in the channels 26. This locates the lugs 23 (as shownin dotted lines in Fig. 1) with their top surfaces between the upper andlower planes of recesses 27 so that when one forwardly rotates the bungin the direction shown by the arrow in Fig. 1, these bridge piece lugsenter the recesses, striking the front walls 28 thereof, and then a'further turning of the bung causes the bridge piece to ride up thethreaded stem until the lugs 23v contact with the top wall 29 of therecesses, giving'such bearino' that the packing washer 13 may betightlyv compressed to seal the joint between the bung head and therlng.

In opening the barrel the reverse opera- Y tion occurs, the bridge piecebeing .loosened and subsequently riding rotatively lnto contact with theuninterrupted -Wall 30 of the channel 26 as the bung isbackwardlyrotated, so that the bung and attached bridge piece may bcsimply lifted out. y In thel slightly modified form shown 111 Fig.I 6the construction may be ldentlcal with that heretofore described savethat each lug 23 of the bridge piece may have its forward, lower corner(i. e. forward in' the direction of tightening rotation) rounded as at31 and its upper surface upsloping circuinferentially in the samedirection as indicated at'32, while the recessed side of cachflangeiportion 25 may be circumferentially downsloped to the channel 26,as shown at 33,-and the top surface of the recess may becircumferentially upsloped, at 29', corresponding with the lug-slope Thecomplemental formations 31, 33 give the construction the useful capacityof plainly indicating to the Workman endeavoring to seal a barrelV thatthe seal is not made, should he have inadvertently started his work withthe bridge piece too high on the screw stem to enter the recesses 2T.Under such conditions no lock is possible and the bridge would simplytravel up the stem until stopped by the collar"19. "ith the constructionshown in Fig. 1 an inexperienced Workman might consider the i barrelsealed, under these conditions, be-

cause of his inability to further turn the bung, but with theconstruction shown in Fig. 6 the rounded edge 31 of the lug willencounter the cam surface 33 of the flange before the bridge piece seatsagainst the collar 19, and so the continued effort of the workman wouldcam the bung -out of its opening. Further, the conrplemental inclinationlof surfaces 32 and 29 gives a sufficient interlock to insure thatvibration will not cause these surfaces to slip to bungfreeing position.even though they be oil lihned. Neither of these relinements isesvsential but either or .both may advantageously be used. i

While I have herein described in somel ture from the spirit of myinvention, withinl the scope of the appended claims.

I claim: A

1. The combination with a barrel-head having an orifice, of a ringsecured to said head and rimming said orificeJ` project-ing above theplane of the head, said ring having bayonet-lock passages thereincomprissaid bridge piece away from the under surface of the head to adistanceequal to the depth of the ring.

2. The combination of an orifice-rim `having internal bayonet-lockpassages andy a cam surface 33 at the top of one of sa1d passages, abung member having provision for closing said orifice anda threadedstem, and a bridge piece threaded on said stem having lugs to engage thebayonet-lock passages and arranged to co-act with said cam surface asdescribed.

3. The combination of an orifice-rim having internalbayonet-loclcpassages, the lateral recesses thereof upslopedcircumferentially as at 295, a bung memberx having provision for closingsaid rim orilice and having a threaded stem, and a bridge piece threadedon said stem having lugs to co-act with said bayonet-lock passages, saidlugs being upsloped circumferentially as at 32.

FREDERICK s. WACKER.

